lmm_expand(maxminSystem_, link->constraint(), action->getVariable(), 1.0);
if (back_route != nullptr) { // sg_network_crosstraffic was activated
XBT_DEBUG("Fullduplex active adding backward flow using 5%%");
lmm_expand(maxminSystem_, link->constraint(), action->getVariable(), 1.0);
if (back_route != nullptr) { // sg_network_crosstraffic was activated
XBT_DEBUG("Fullduplex active adding backward flow using 5%%");